Title: Automobile speed control system

Abstract: Automobile speed control system to maintain actual automobile speed at a desired automobile speed, in which a first electrical signal indicating actual automobile speed is compared with a second electrical signal indicating desired automobile speed in a comparator circuit to obtain an error signal indicating the difference between actual and desired automobile speeds. The error signal is supplied to throttle valve control means to shift a throttle valve into a position at which actual automobile speed equals the desired automobile speed. A superposed signal, consisting of the first electric signal and a negative feedback signal substantially indicating throttle valve position, is applied to a memory capacitor which provides the second electrical signal. Rememorization of the capacitor is controlled by a set switch through a memorization control circuit. The desired automobile speed level to be memorized on the capacitor is controlled by closure duration and closure repetition of the set switch.

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Other info:

Inventors: Sakakibara, Naoji (Chiryu, JP)
Kawata, Shoji (Okazaki, JP)

Application Number: 888801
Filing Date: 1978-03-21
Publication_date: 1980-08-05
Assignee: Aisin Seiki Kabushiki Kaisha (Kariya, JP)
Primary Class(es): 180/176 123/352, 123/360
Other Classes:
US Patent Ref:

Re27324	Mar, 1972	Granger et al.	180/176.
3381771	May, 1968	Granger et al.	180/176.
3477346	Nov, 1969	Slavin et al.	91/361.
3485316	Dec, 1969	Slavin et al.	180/176.
3599154	Aug, 1971	Caro, Jr. et al.	180/176.
3793622	Feb, 1974	Hida et al.	180/176.
3885644	May, 1975	Seidler et al.	123/102.
3952829	Apr, 1976	Gray	180/170.
4056157	Nov, 1977	Kawata	180/176.

Other Refs:
Primary Examiner: Love, John J.
Assistant Examiner: Smith, Milton L.
Attorney: Sughrue, Rothwell, Mion, Zinn and Macpeak